54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "../util/chunks.h"
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/* CSMP - Retro Studios sample [Metroid Prime 3 (Wii)-sfx, Donkey Kong Country Returns (Wii)-sfx] */
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VGMSTREAM* init_vgmstream_csmp(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset, first_offset = 0x08, chunk_offset;
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int loop_flag, channels;
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/* checks */
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if (!is_id32be(0x00, sf, "CSMP"))
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goto fail;
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if (!check_extensions(sf, "csmp"))
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goto fail;
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if (read_u32be(0x04, sf) != 1) /* version? */
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goto fail;
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/* INFO > PAD > DATA */
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if (!find_chunk(sf, get_id32be("DATA"),first_offset,0, &chunk_offset,NULL, 1, 0))
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goto fail;
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/* contains a not quite standard DSP header */
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channels = 1; /* also at INFO + 0x00? (in practice uses dual stereo in separate files) */
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loop_flag = read_s16be(chunk_offset+0x0c,sf); /* also at INFO + 0x01 */
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start_offset = chunk_offset + 0x60;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channels, loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->meta_type = meta_CSMP;
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vgmstream->sample_rate = read_s32be(chunk_offset+0x08,sf);
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vgmstream->num_samples = read_s32be(chunk_offset+0x00,sf);
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vgmstream->loop_start_sample = read_s32be(chunk_offset+0x10,sf); /* unlike regular DSP's nibbles */
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vgmstream->loop_end_sample = read_s32be(chunk_offset+0x14,sf) + 1;
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = layout_none;
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dsp_read_coefs_be(vgmstream, sf, chunk_offset+0x1c, 0x00);
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dsp_read_hist_be(vgmstream, sf, chunk_offset+0x40, 0x00);
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if (!vgmstream_open_stream(vgmstream, sf, start_offset))
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goto fail;
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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